Absorbent article and method for manufacturing absorbent article

Abstract

To provide an absorbent article using a non-permeable base sheet having a base film and a base nonwoven fabric attached to the whole surface of the base film, and to provide a method for manufacturing the absorbent article.SOLUTION: The absorbent article 10 includes a surface layer sheet 20 having a liquid-permeable region, a liquid-impermeable base sheet 30, and a strip-like absorbent part 40 arranged between the surface layer sheet 20 and the base sheet 30, wherein the base sheet 30 has a base film 31 arranged on the absorbent part 40 side and a base nonwoven fabric 32 stuck to the whole surface of the base film 31.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an absorbent article and a method for manufacturing an absorbent article. [Background technology]

[0002] Various absorbent articles are in use, such as sanitary napkins, panty liners, and incontinence pads. High-performance absorbent articles, such as pants-type absorbent articles, have been developed (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-29449 Summary of the Invention [Problem to be solved by the invention]

[0004] The present disclosure provides an absorbent article using a liquid-impermeable base sheet having a base film and a base nonwoven fabric attached to the entire surface of the base film, and a method for manufacturing the absorbent article. [Means for solving the problem]

[0005] The absorbent article comprises a surface sheet having a liquid-permeable region, a liquid-impermeable base sheet, and a strip-shaped absorbent section arranged between the surface sheet and the base sheet, and the base sheet has a base film arranged on the absorbent section side and a base nonwoven fabric attached to the entire surface of the base film. [Effects of the Invention]

[0006] According to the present disclosure, there are provided an absorbent article using a liquid-impermeable base sheet having a base film and a base nonwoven fabric attached to the entire surface of the base film, and a method for manufacturing an absorbent article. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 2 is a front view of the absorbent article. [Figure 2] FIG. 2 is a schematic cross-sectional view taken along line II-II in FIG. [Figure 3] 1A to 1C are explanatory diagrams illustrating a manufacturing process of an absorbent article. [Figure 4] FIG. 2 is an explanatory diagram illustrating the configuration of a surface layer sheet. [Figure 5] FIG. 5 is an enlarged view of a portion V in FIG. [Figure 6] 4A to 4C are explanatory views illustrating a manufacturing process of the absorbent section. [Figure 7] FIG. 2 is an explanatory diagram illustrating the assembly process of the surface sheet and the absorbent section. [Figure 8] FIG. 10 is an explanatory diagram illustrating a process of attaching a base portion and cutting off the outer shape. [Figure 9] FIG. 2 is an enlarged view of part IX in FIG. [Figure 10] FIG. 4 is an explanatory diagram illustrating the arrangement of adhesive. DETAILED DESCRIPTION OF THE INVENTION

[0008] [Embodiment 1] 1 is a front view of an absorbent article 10. In this embodiment, the absorbent article 10 will be described as a sanitary napkin. However, the absorbent article 10 may also be a panty liner, an incontinence pad, or the like.

[0009] FIG. 1 shows an absorbent article 10 with the side that contacts the user's skin facing forward. The absorbent article 10 of this embodiment has a shape in which approximately trapezoidal wing portions 12 protrude from each of the two long sides of a substantially rectangular shape. A second adhesive 52 (see FIG. 10) is attached to the back side of the wing portions 12. The second adhesive 52 is used to secure the absorbent article 10 to the user's underwear. In the following description, the direction corresponding to the long sides of the substantially rectangular shape will be referred to as the longitudinal direction.

[0010] Both short sides of the rectangle are formed in a roughly arc shape with rounded corners. The absorbent article 10 is used with the top side of the figure facing the user's stomach and the bottom side facing the user's back. In other words, the wing portions 12 protrude slightly from the stomach side beyond the center of the long sides. The absorbent article 10 contains an absorbent section 40, shown by the dashed line. The absorbent section 40 is a roughly oval sheet. The wing portions 12 protrude outward in the width direction of the absorbent section 40.

[0011] Fig. 2 is a schematic diagram of the cross section taken along line II-II in Fig. 1. Fig. 2 is a schematic diagram in which the thickness direction of the absorbent article 10 is enlarged and gaps are provided between the components that make up the absorbent article 10. Fig. 2 does not accurately reflect the dimensional ratios of the components that make up the absorbent article 10. The second adhesive 52 is not shown in Fig. 2.

[0012] The explanation will continue with reference to Figures 1 and 2. The absorbent article 10 has a surface sheet 20 and a base sheet 30 in addition to the aforementioned absorbent section 40. The absorbent section 40 is disposed between the surface sheet 20 and the base sheet 30. The edges of the surface sheet 20 and the edges of the base sheet 30 are welded together around the periphery of the absorbent section 40 by edge welds 16, forming a bag-like shape that houses the absorbent section 40 inside.

[0013] The surface sheet 20 comprises a first sheet 21 and a second sheet 22. The first sheet 21 is strip-shaped and extends in the longitudinal direction. The first sheet 21 and the second sheet 22 are fixed together by strip-like welded portions 27 provided along the edges of the first sheet 21. The strip-like welded portions 27 are provided at a location away from the edges of the second sheet 22. The edges of the second sheet 22 form side guards 25 that extend from both longitudinal edges of the first sheet 21 toward the center of the first sheet 21.

[0014] The first sheet 21 is a liquid-permeable nonwoven fabric. Here, liquid-permeable means that it allows substances to be absorbed, such as menstrual blood or urine secreted by the user, to pass through quickly. The first sheet 21 forms a liquid-permeable region of the top sheet 20.

[0015] The first sheet 21 is, for example, a nonwoven fabric having gaps between the fibers. The fibers constituting the first sheet 21 are made of synthetic resin such as polypropylene or polyethylene. The material, thickness, and gaps between the fibers constituting the first sheet 21 are selected according to the characteristics of the material to be absorbed by the absorbent article 10.

[0016] The second sheet 22 is a water-repellent nonwoven fabric. Here, water-repellent means that the surface repels liquid. The second sheet 22 is a nonwoven fabric that is water-repellent coated with, for example, fluororesin or silicone resin. The fibers that make up the second sheet 22 are made of synthetic resin, for example, polypropylene or polyethylene. Because the second sheet 22 is water-repellent, liquids such as menstrual blood or urine are repelled by the side guards 25 and absorbed by the first sheet 21, preventing so-called side leakage.

[0017] The base sheet 30 includes a base film 31 and a base nonwoven fabric 32. The base film 31 is a liquid-impermeable film having a substantially uniform thickness. The base film 31 is preferably a breathable film. The base film 31 is disposed on the inner side of the absorbent article 10, i.e., on the absorbent section 40 side.

[0018] The thickness of the base film 31 is preferably in the range of 0.015 mm to 0.1 mm, more preferably in the range of 0.015 mm to 0.055 mm, and even more preferably in the range of 0.015 mm to 0.037 mm.

[0019] The thickness of the base film 31 is more preferably in the range of 0.031 mm to 0.037 mm, and is also more preferably in the range of 0.045 mm to 0.055 mm.

[0020] If the base film 31 is thick, the breathability decreases, making the user more likely to feel stuffy and uncomfortable. If the base film 31 is thin, the strength decreases, increasing the risk of leakage due to damage to the base film 31 during use.

[0021] The aforementioned range of 0.015 mm to 0.055 mm is a range in which users are less likely to experience stuffiness-related discomfort and anxiety about leaks, and can use the device comfortably. The aforementioned range of 0.015 mm to 0.037 mm is a range in which users are even less likely to experience stuffiness-related discomfort and can use the device comfortably.

[0022] The aforementioned range of 0.045 mm to 0.055 mm is a range that provides an appropriate balance between reducing discomfort caused by stuffiness and preventing damage caused by large movements, even for users who move around a lot, such as students taking physical education classes.

[0023] The aforementioned range of 0.031 mm to 0.037 mm is a range that provides an appropriate balance between reducing discomfort caused by stuffiness and preventing breakage for users who do not move around much, such as those who work at a desk.

[0024] The base nonwoven fabric 32 is a nonwoven fabric having a substantially uniform thickness. The base nonwoven fabric 32 is preferably a breathable nonwoven fabric. The base nonwoven fabric 32 is attached to the entire surface of the base film 31.

[0025] The thickness of the base nonwoven fabric 32 is preferably in the range of 0.1 mm to 0.5 mm, more preferably 0.1 mm to 0.23 mm, and even more preferably 0.18 mm to 0.23 mm.

[0026] If the base nonwoven fabric 32 is thick, the user is more likely to feel uncomfortable due to a stiff feel. If the base nonwoven fabric 32 is thin, the strength decreases, increasing the risk of the base nonwoven fabric 32 breaking during use and slipping off the underwear. The aforementioned range of 0.1 mm to 0.23 mm is a range in which the user is less likely to feel uncomfortable due to a stiff feel and can use the product comfortably. The aforementioned range of 0.18 mm to 0.23 mm is a range in which an appropriate balance is achieved between reducing discomfort and preventing breakage.

[0027] The combination of the thickness of the base film 31 and the thickness of the base nonwoven fabric 32 is preferably about 0.034 mm for the base film 31 and about 0.206 mm for the base nonwoven fabric 32. This makes it possible to provide an absorbent article 10 with excellent properties that is comfortable for the user to wear and less likely to leak due to breakage.

[0028] A first adhesive 51 is attached to the outer surface of the base nonwoven fabric 32. The first adhesive 51 is used to secure the absorbent article 10 to the user's underwear.

[0029] The absorbent section 40 comprises an absorbent sheet 41 and an absorbent body 42. The absorbent body 42 is a polymer absorbent formed in a strip shape. In the following explanation, the upper surface of the absorbent body 42 in Figure 2 will be referred to as the first surface, and the lower surface will be referred to as the second surface. That is, the first surface of the absorbent body 42 is disposed on the surface sheet 20 side, and the second surface is disposed on the base sheet 30 side.

[0030] The absorbent sheet 41 is a strip-like nonwoven fabric that is approximately twice as wide as the absorbent body 42 and is wound around the absorbent body 42. The material of the fibers that make up the absorbent sheet 41 is, for example, plant fiber such as pulp. The properties of the absorbent sheet 41 and the absorbent body 42 are selected according to the properties of the material to be absorbed by the absorbent article 10.

[0031] The first surface of the absorber 42 is attached to the center in the width direction of the absorbent sheet 41. The absorbent sheet 41 is folded toward the second surface on the outside of the absorber 42. The folded portion of the absorbent sheet 41 is attached to the second surface of the absorber 42.

[0032] The absorbent sheet 41 is folded back so that both ends are butted together, as shown in part A of Figure 2. The edges of the absorbent sheet 41 may overlap by several millimeters. In either case, the fold line of the absorbent sheet 41 extends in the longitudinal direction. The absorbent section 40 is arranged with the center of the absorbent sheet 41 facing the top sheet 20 and the edges of the absorbent sheet 41 facing the base sheet 30.

[0033] In Figure 2, the surface sheet 20 and the absorbent section 40, and the base sheet 30 and the absorbent section 40 are shown separated from each other, but the surface sheet 20 and the absorbent section 40, and the base sheet 30 and the absorbent section 40 are fixed together with an adhesive. Furthermore, in Figure 2, a roughly U-shaped groove-shaped space is shown between the side of the absorber 42 and the absorbent sheet 41, and in this area, the absorbent sheets 41 are fixed together and between the absorbent sheet 41 and the side of the absorber 42 with an adhesive.

[0034] As shown by the two-dot chain line in Figure 2, an individual packaging material 55 that also serves as release paper is attached to the first adhesive 51. As shown by the two-dot chain line in Figure 1, the individual packaging material 55 is larger than the absorbent article 10 except for the tip portions of the wing portions 12. The individual packaging material 55 covers the entire absorbent article 10 in a state where it is folded into a substantially rectangular parallelepiped shape. The individual packaging material 55 prevents the absorbent article 10 from being contaminated by dust and the like before use. The configuration in which the absorbent article 10 is covered with the individual packaging material 55 that also serves as release paper has been commonly used for a long time, so detailed illustrations and explanations will be omitted.

[0035] Figure 3 is an explanatory diagram illustrating the manufacturing process of the absorbent article 10. An overview of the manufacturing process will be explained using Figure 3. As shown surrounded by dashed lines, a surface sheet 20, a base sheet 30, and an absorbent section 40 are each manufactured. The manufacturing process and configuration of each will be described later.

[0036] The surface sheet 20 and the absorbent section 40 are fixed together by press fixing. Then, the base sheet 30 is temporarily fixed and then welded. The outer shape is cut into the shape shown in FIG. 1. The first adhesive 51 and the second adhesive 52 are attached in predetermined positions. Then, the absorbent article 10 is individually packaged in individual packaging material 55, and the absorbent article 10 is completed.

[0037] Fig. 4 is an explanatory diagram illustrating the configuration of the surface sheet 20. Fig. 4A is a front view of the surface sheet 20 as seen from the side that contacts the user's skin. In the following description, the surface that contacts the user's skin will be referred to as the front surface, and the opposite surface will be referred to as the back surface.

[0038] 4B is a bottom view of the surface sheet 20. As described above, the surface sheet 20 includes a first sheet 21 and a second sheet 22. The edges of the first sheet 21 and the second sheet 22 are welded together by strip-like welded portions 27.

[0039] 3 and 4, the explanation will be continued. The manufacturer of the top sheet 20 spreads the first sheet 21, which has been cut to a predetermined size in advance, on a flat surface with the surface facing up. The manufacturer may be a human production worker, an automatic production device, or a robot.

[0040] The manufacturer applies an adhesive to the edges of the long sides of first sheet 21. The adhesive may be, for example, thin strips of double-sided tape. The manufacturer may also mask the surface of first sheet 21 except for the edges, and then spray a spray-type adhesive onto the surface.

[0041] The manufacturer places two second sheets 22 on top of the first sheet 21 and temporarily secures them together. At this time, the edges of each second sheet 22 are positioned parallel to the edges of the long sides of the first sheet 21 and inside the adhesive. The manufacturer heats the first sheet 21 and the second sheet 22 along the adhesive to weld them together. This forms the stripe-like welded portions 27 and the side guards 25. The side guards 25 function to prevent the side leakage of absorbent material such as menstrual blood or urine.

[0042] Figure 5 is an enlarged view of the V portion in Figure 4. Numerous hexagonal welding spots 28 are formed by compressing the first sheet 21 and the second sheet 22 to form depressions. As shown in Figure 5, welding to form multiple welding spots 28 prevents the entire stripe-like welding portion 27 from becoming hard and becoming uncomfortable to the touch. As shown in Figure 5, no welding spots 28 are provided at the ends of the side guards 25, which also helps prevent hard welding spots 28 from irritating the user's skin.

[0043] Note that the edges of the second sheet 22 before temporary fixing may be folded back to a width corresponding to the width of the side guards 25. In the process of welding the first sheet 21 and the second sheet 22 together, the folded back portions are also welded. However, as shown in FIG. 5, no welding spots 28 are formed near the fold lines. Therefore, the edges of the side guards 25 are formed into a rounded shape by folding back the second sheet 22. As a result, it is possible to prevent the edges of the side guards 25 from causing discomfort to the user's skin.

[0044] Figure 6 is an explanatory diagram illustrating the manufacturing process of the absorbent section 40. Figure 6A shows a state in which an absorber 42 is placed on an absorbent sheet 41. Figure 6B shows a state in which the absorbent sheet 41 is folded. Figure 6C shows a state in which the folded absorbent sheet 41 is cut into a substantially oval sheet shape to form the completed absorbent section 40.

[0045] 3 and 6, the manufacturer of the absorbent member 40 spreads the absorbent sheet 41, which has been cut to a predetermined size in advance, on a flat surface. The manufacturer then sprays, for example, a spray-type adhesive onto the entire surface of the absorbent sheet 41.

[0046] The manufacturer places the absorbent body 42, cut into a strip, in the center of the absorbent sheet 41. The manufacturer folds the absorbent sheet 41 slightly outside the long sides of the absorbent body 42 along a valley fold line parallel to the long sides of the absorbent body 42. The manufacturer places the folded portion on top of the absorbent body 42. By folding the absorbent sheet 41 on both sides of the absorbent body 42, the upper surface of the absorbent body 42 is covered with the absorbent sheet 41, as shown in FIG. 6B .

[0047] The manufacturer cuts the edge of the absorbent sheet 41 into a generally arc-shaped piece that passes through the vicinity of the corner of the absorbent body 42. As shown in Fig. 6C, the absorbent section 40 is completed in a generally oval shape. In the absorbent section 40, the absorbent body 42 is arranged over substantially the entire length in the longitudinal direction, excluding the vicinity of the arc-shaped edge.

[0048] Figure 7 is an explanatory diagram illustrating the assembly process of the top layer sheet 20 and the absorbent section 40. Figure 7A shows the top layer sheet 20 with the back side, i.e., the side that does not contact the user's skin, facing up. Figure 7B shows the top layer sheet 20 and the absorbent section 40 pressed together.

[0049] The manufacturer turns the back surface of the top sheet 20 upward. The manufacturer masks the area where the second sheet 22 will be, and sprays a spray-type adhesive onto the entire surface of the first sheet 21. The manufacturer places the absorbent section 40 on the top sheet 20 with the seam of the absorbent sheet 41 facing up.

[0050] The manufacturer operates a press to press and fix the top sheet 20 and the absorbent section 40 together. The marks from the press form a pressed pattern 17. As shown in Figure 1, the pressed pattern 17 is formed so that it can be seen from the surface of the absorbent article 10.

[0051] Fig. 8 is an explanatory diagram illustrating the process of attaching the base portion and cutting off the outer shape. Fig. 8A shows the state in which the base sheet 30 is placed on top of Fig. 7B. Fig. 8B shows the state in which the surface sheet 20 and the base sheet 30 have been cut off.

[0052] The explanation will continue with reference to Figures 2, 3, and 8. The base film 31 and the base nonwoven fabric 32 are long sheets having approximately the same width, and are each wound into a roll. The manufacturer unrolls the base film 31 from the roll and sprays a spray-type adhesive onto one side. The manufacturer also unrolls the base nonwoven fabric 32 from the roll and bonds it to the base film 31. The bonded portion becomes the base sheet 30.

[0053] The manufacturer sprays a spray-type adhesive onto the entire surface of the base film 31 side of the base sheet 30. The manufacturer places the base sheet 30 with the base film 31 side facing downwards over the press-fixed top sheet 20 and absorbent section 40 shown in FIG. 7B. This completes the process shown in FIG. 8A. Note that in FIG. 8A, the base sheet 30 is shown simplified to have the same length as the second sheet 22.

[0054] The manufacturer welds the surface sheet 20 and the base sheet 30 together at the edge weld 16 shown by hatching in Fig. 8B. The manufacturer then cuts the surface sheet 20 and the base sheet 30 together along the cutting line 15. The cutting line 15 is located within the edge weld 16. Therefore, the surface sheet 20 and the base sheet 30 do not separate even after cutting.

[0055] Figure 9 is an enlarged view of portion IX in Figure 1. The explanation will continue with Figure 9 and Figure 2. A large number of square welding spots 28 are arranged in a depression-like shape formed by compressing first sheet 21, second sheet 22, base film 31, and base nonwoven fabric 32. Each side of welding spots 28 is 0.7 millimeters, and the welding spots 28 are arranged at intervals of 0.7 millimeters vertically and horizontally.

[0056] As shown in Fig. 9, welding to form multiple welding spots 28 prevents the entire edge welding portion 16 from becoming hard and becoming uncomfortable to the touch. Note that hexagonal welding spots 28 may be formed on the edge welding portion 16, similar to the welding spots 28 on the side guard 25 described using Fig. 5. Square welding spots 28 may be formed on the side guard 25, similar to Fig. 9.

[0057] As shown in Figure 1, both longitudinal ends of the side guards 25 are welded by edge welds 16. This prevents problems such as the side guards 25 curling up in subsequent processes, making it possible to provide absorbent articles 10 of consistent quality.

[0058] Fig. 10 is an explanatory diagram illustrating the arrangement of adhesives. Fig. 10A is an explanatory diagram illustrating the arrangement of second adhesive 52. Fig. 10B is an explanatory diagram illustrating the arrangement of first adhesive 51. The explanation will continue with reference to Fig. 10 and Fig. 3.

[0059] FIG. 10A shows the absorbent article 10 in a state in which the wing portions 12 are folded with the side that contacts the user's skin facing upward. The manufacturer applies an adhesive in an oval shape to each of the two wing portions 12 to form the second adhesive 52. Note that the shape to which the second adhesive 52 is applied is not limited to an oval. The manufacturer may apply the second adhesive 52 in any shape, such as a rectangle or an oval. The shapes of the second adhesive 52 applied to the two wing portions 12 may be different.

[0060] The manufacturer applies a sheet of release paper (not shown) across the two second adhesives 52. The wing portions 12 are held in a folded state by the release paper.

[0061] Fig. 10B shows Fig. 10A turned upside down. The manufacturer applies adhesive in multiple strips perpendicular to the longitudinal direction to form first adhesive 51. The manufacturer then attaches individual packaging material 55, which also serves as release paper, to first adhesive 51. The manufacturer folds absorbent article 10 longitudinally, for example, in thirds. The manufacturer seals the edges of individual packaging material 55 by thermocompression. This completes the individually packaged absorbent article 10.

[0062] According to this embodiment, it is possible to provide an absorbent article using a liquid-impermeable base sheet having a base film and a base nonwoven fabric attached to the entire surface of the base film, and a method for manufacturing an absorbent article.

[0063] As explained using Figure 6, the absorbent body 42 is not disposed near the arcuate edges of the absorbent section 40. Therefore, it is possible to provide an absorbent article 10 whose longitudinal ends are relatively thin, which fits the user's body well and causes little discomfort.

[0064] According to this embodiment, it is possible to provide an absorbent article 10 that satisfies necessary functions while producing less waste compared to high-performance absorbent articles such as the panty-type absorbent article disclosed in Patent Document 1. Therefore, it is possible to provide an absorbent article that can contribute to the SDGs (Sustainable Development Goals).

[0065] Furthermore, since the absorbent article 10 has a simple configuration with few components, the manufacturing costs of the absorbent article 10 can be reduced.

[0066] The shape and dimensions of the absorbent article 10 are determined appropriately depending on the intended use of the absorbent article 10. For example, a relatively small absorbent article 10 is provided for daytime use, and a relatively large absorbent article 10 is provided for nighttime use. By allowing the user to select and use an absorbent article 10 of an appropriate size depending on their physical condition and schedule, an increase in the amount of waste can be prevented.

[0067] Instead of cutting the absorbent section 40 into an oval shape as described using Fig. 6C, the manufacturer may simultaneously cut the outer shape of the absorbent section 40 along the cutting line 15 along with the surface sheet 20 and the base sheet 30. This eliminates one cutting step, thereby reducing the cost of the absorbent article 10.

[0068] When such a manufacturing process is employed, the edge of the absorbent section 40 is exposed at the edge of the absorbent article 10. However, leakage of the absorbent material from the edge of the absorbent section 40 can be prevented by taking design measures, such as by making the edge welded section 16 wider.

[0069] The technical features (constituent elements) described in each embodiment can be combined with each other, and by combining them, new technical features can be formed. The embodiments disclosed herein are illustrative in all respects and should not be considered as limiting. The scope of the present invention is defined by the claims, not by the above meaning, and is intended to include all modifications within the meaning and scope of the claims.

[0070] Independent and dependent claims may be combined with each other in any combination, regardless of the reference format. Furthermore, while the claims may be written in a format in which a claim references two or more other claims (multiple claim format), this is not a limitation. Multiple claims that reference at least one other claim (multiple multiple claim format) may also be written. [Explanation of symbols]

[0071] 10 Absorbent articles 12 Wing section 15 Cutting line 16 Edge weld 17 Press Pattern 20 Surface sheet 21 Sheet 1 22 Second Sheet 25 Side guard 27 Streak welds 28 Welding Spot 30 base sheet 31 Base film 32 Base nonwoven fabric 40 Absorption section 41 Absorbent Sheet 42 Absorbent 51 First adhesive 52 Second adhesive 55 individual packaging materials

Claims

1. a surface sheet having a liquid-permeable region; a liquid-impermeable base sheet; a strip-shaped absorbent section disposed between the surface sheet and the base sheet, The base sheet is a base film disposed on the absorbent portion side; a base nonwoven fabric attached to the entire surface of the base film; Absorbent articles.

2. The surface layer sheet is a strip-shaped liquid-permeable first sheet; two second sheets overlapping both longitudinal edges of the first sheet, The first sheet and each of the second sheets are welded together by stripe-shaped welds parallel to the longitudinal direction of the first sheet at locations away from the edges of the second sheets. The absorbent article of claim 1.

3. The absorbent body is formed by the surface sheet and the base sheet and has wing portions that protrude outward in the width direction of the absorbent body. The absorbent article of claim 1.

4. The absorption section is A strip-shaped absorber; an absorbent sheet wider than the absorbent body, the first surface of the absorber is attached to the center of the absorbent sheet in the width direction, the absorbent sheet has a folded portion parallel to the edge of the absorbent body on the outer side of the absorbent body and attached to the second surface of the absorbent body; The absorbent body has a first surface disposed on the surface sheet side. The absorbent article of claim 1.

5. The thickness of the base film is 0.015 mm or more and 0.1 mm or less. The absorbent article of claim 1.

6. The thickness of the base sheet is 0.1 mm or more and 0.5 mm or less. The absorbent article of claim 1.

7. The base film is made of polypropylene. The absorbent article according to any one of claims 1 to 6.

8. a strip-shaped absorbent section, both ends of which are cut into an arc shape, fixed to the center of a surface sheet having a liquid-permeable region; A base sheet having a base film and a base nonwoven fabric attached to the entire surface of the base film is coated with an adhesive on the surface of the base film, The surface of the base sheet facing the base film is fixed to the absorbent section and the outer portion of the surface sheet, The base sheet and the surface sheet are welded together outside the absorbent section, Cut off the welded part A method for manufacturing an absorbent article.

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